that Satan is a real, created being entirely given over to evil and that evil is whatever opposes God or is not willed by God. Evangelicals emphasize the power and involvement of Satan in history in varying degrees; some virtually ignore Satan and others revel in speculation about spiritual warfare against that personal power of darkness. According to Soergel, Martin Luther avoided "an extensive treatment of the angels' place in heavenly hierarchy or in Christian theology." Modern Protestants continue in a similar way, since it is thought as neither useful nor necessary to know. Jehovah's Witnesses Jehovah's Witnesses believe that Satan was originally a perfect angel who developed feelings of self-importance and craved worship that belonged to God. Satan persuaded Adam and Eve to obey him rather than God, raising the issue—often referred to as a "controversy"—of whether people, having been granted free will, would obey God under both temptation and persecution. The issue is said to be whether God can rightfully claim to be sovereign of the universe. Instead of destroying Satan, God decided to test the loyalty of the rest of humankind and to prove to the rest of creation that Satan was a liar. Jehovah's Witnesses believe that Satan is God's chief adversary and the invisible ruler of the world. They believe that demons were originally angels who rebelled against God and took Satan's side in the controversy. Jehovah's Witnesses do not believe that Satan lives in Hell or that he has been given responsibility to punish the wicked. Satan and his demons are said to have been cast down from Heaven to Earth in 1914, marking the beginning of the "last days". Witnesses believe that Satan and his demons influence individuals, organizations and nations, and that they are the cause of human suffering. At Armageddon, Satan is to be bound for 1,000 years, and then given a brief opportunity to mislead perfect humanity before being destroyed. Latter Day Saints In Mormonism, the devil is a real being, a literal spirit son of God who once had angelic authority, but rebelled and fell prior to the creation of the Earth in a pre-mortal life. At that time, he persuaded a third part of the spirit children of God to rebel with him. This was in opposition to the plan of salvation championed by Jehovah (Jesus Christ). Now the devil tries to persuade mankind into doing evil ().